21247330

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{1193}}^1$

素因数の和:1350

約数の個数: 32

約数和(自身を含む): 41522544

約数和(自身を除く): 20275214

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 137, 274, 685, 1193, 1370, 1781, 2386, 3562, 5965, 8905, 11930, 15509, 17810, 31018, 77545, 155090, 163441, 326882, 817205, 1634410, 2124733, 4249466, 10623665, 21247330]

約数ペア:

[(1, 21247330), (2, 10623665), (5, 4249466), (10, 2124733), (13, 1634410), (26, 817205), (65, 326882), (130, 163441), (137, 155090), (274, 77545), (685, 31018), (1193, 17810), (1370, 15509), (1781, 11930), (2386, 8905), (3562, 5965)]